The scientists are now trying to discover that use could be _________ such material.
| A．made out | B．made up | C．made of | D．made from |
—You've made great progress in your studies of English, haven't you?
—Yes, but much________to be done.
| A．leaves | B．keeps | C．remains | D．has |
It is reported that the police will soon ____ the case of two missing children.
| A．look upon | B．look after | C．look into | D．look out |
Sometimes the police are not absolutely sure that someone has committed a crime, but ________ him of having done it.
| A．charge | B．suspect | C．inspect | D．doubt |
Considering your salary, you should _______ at least 100 dollars a week.
| A．put up | B．put forward | C．put aside | D．put out |
—What's the matter with you, Lucy?
—After the long walk, my legs ___________ and I couldn't go any farther.
| A．gave off | B．gave in | C．gave up | D．gave out |